Calculate the value of stress on a wire of steel having radius of 2 mm, when 10 kN of force is applied on it.

Options

A. `7.76 xx 10^(8) Nm^(-2)`
B. `7.96 xx 10^(8) Nm^(-2)`
C. `6.96 xx 10^(8) Nm^(-2)`
D. `5.56 xx 10^(8) Nm^(-2)`

Explanation

To solve the problem of calculating the stress on a steel wire with a radius of 2 mm when a force of 10 kN is applied, we can follow these steps:

### Step 1: Understand the formula for stress
Stress (σ) is defined as the force (F) applied per unit area (A). The formula is given by:
\[ \sigma = \frac{F}{A} \]

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